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Execution Warnings Event Class

The Execution Warnings event class indicates memory grant warnings that occurred during the execution of a SQL Server statement or stored procedure. This event class can be monitored to determine if queries had to wait one second or more for memory before proceeding, or if the initial attempt to get memory failed. Information about query wait periods can help uncover contention issues in the system that can affect performance.

Data Column Name Data Type Description Column ID Filterable

ApplicationName

nvarchar

Name of the client application that created the connection to an instance of SQL Server. This column is populated with the values passed by the application rather than the displayed name of the program.

10

Yes

ClientProcessID

int

ID assigned by the host computer to the process where the client application is running. This data column is populated if the client provides the client process ID.

9

Yes

DatabaseID

int

ID of the database specified by the USE database statement or the default database if no USE database statement has been issued for a given instance. SQL Server Profiler displays the name of the database if the ServerName data column is captured in the trace and the server is available. Determine the value for a database by using the DB_ID function.

3

Yes

DatabaseName

nvarchar

Name of the database in which the user statement is running.

35

Yes

Duration

bigint

Time (in milliseconds) that the query had to wait to get the required memory. Valid only when EventSubClass = 1 (Query wait).

13

Yes

Error

int

Not used.

31

Yes

EventClass

int

Type of event = 67.

27

No

EventSequence

int

Sequence of a given event in the trace.

51

No

EventSubClass

int

Type of event subclass.

1=Query wait

2=Query timeout

21

Yes

HostName

nvarchar

Name of the computer on which the client is running. This data column is populated if the client provides the host name. To determine the host name, use the HOST_NAME function.

8

Yes

IsSystem

int

Indicates whether the event occurred on a system process or a user process. 1 = system, NULL = user.

60

Yes

LoginName

nvarchar

Name of the login of the user (either SQL Server security login or the Microsoft Windows login credentials in the form of DOMAIN\username).

11

Yes

LoginSid

image

Security identifier (SID) of the logged-in user. You can find this information in the syslogins table of the master database. Each SID is unique for each login in the server.

41

Yes

NTDomainName

nvarchar

Windows domain to which the user belongs.

7

Yes

NTUserName

nvarchar

Windows user name.

6

Yes

RequestID

int

ID of the request containing the statement.

49

Yes

ServerName

nvarchar

Name of the instance of SQL Server that is being traced.

26

No

SessionLoginName

nvarchar

Login name of the user who originated the session. For example, if you connect to SQL Server using Login1 and execute a statement as Login2, SessionLoginName shows Login1 and LoginName shows Login2. This column displays both SQL Server and Windows logins.

64

Yes

SPID

int

ID of the session on which the event occurred.

12

Yes

StartTime

datetime

Time at which the event started, if available.

14

Yes

TextData

ntext

XML document describing server-wide memory grants.

1

Yes

TransactionID

bigint

System-assigned ID of the transaction.

4

Yes

XactSequence

bigint

Token that describes the current transaction.

50

Yes

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